423731516526 has 24 divisors (see below), whose sum is σ = 918469342440. Its totient is φ = 141184701936.

The previous prime is 423731516519. The next prime is 423731516561. The reversal of 423731516526 is 625615137324.

423731516526 is a `hidden beast` number, since 4 + 2 + 3 + 73 + 1 + 51 + 6 + 526 = 666.

It is a super-2 number, since 2×423731516526² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4883880 + ... + 4969883.

It is an arithmetic number, because the mean of its divisors is an integer number (38269555935).

Almost surely, 2^423731516526 is an apocalyptic number.

423731516526 is an abundant number, since it is smaller than the sum of its proper divisors (494737825914).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

423731516526 is a wasteful number, since it uses less digits than its factorization.

423731516526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9856160 (or 9856157 counting only the distinct ones).

The product of its digits is 907200, while the sum is 45.

The spelling of 423731516526 in words is "four hundred twenty-three billion, seven hundred thirty-one million, five hundred sixteen thousand, five hundred twenty-six".